5 things every computer user needs to know how to do

A good number of computer users think the answer to the tech problems they encounter is to ignore the symptoms, upgrade to fancier software or buy a new computer.

Let me help. Here are five things that won’t turn you into a tech guru overnight, but they'll keep your computer running fast, make you more productive and save you tons of frustration. Best of all, they won’t cost you a cent.

If you're the tech support person for your family and friends, be sure to share this with them. You'll get more work done if your mailbox doesn’t fill up with subject lines like "Do I have a virus?" or "Help! Having Wi-Fi problems!"

1. Work faster using keyboard shortcutsThe great thing about computers is that they can work much faster than you can. But telling them what to do is often a slow process. Well, there's a fix for that.

Say you're ready to print a document. Instead of using the mouse to move a cursor around the screen and selecting "Print" from a drop-down menu, just hit Control+P on your keyboard.

Every computer you own should have an antivirus program, a firewall and an antispyware program. If you're missing one or more of these, head over to my Security Center to download excellent free security programs.

Another huge threat right now is security holes in Java, a programming language used by Web browsers to run interactive content.

When a vulnerable version of Java is active in a Web browser, visiting a compromised website is all it takes for crooks to sneak malware on to your computer. In most cases, you won't even know the site is compromised until it's too late.

To stay safe, stop using Java - or stay on top of the upgrades and use Java a lot more guardedly.

3. Share large files the easy wayThe Internet was designed to make sharing information easy. But we've all run into roadblocks trying to share larger files by email.

Sending large files through email is slow, can hit attachment size limits or fill up recipient inboxes.

Fortunately, there are easier ways to share large files. Three popular sites will get the job done for you: Dropbox, WikiSend and Senduit.

Make sure your wireless network is encrypted. A sudden drop-off in wireless network speed could be a sign that your neighbors are using your open connection to surf and download files.

If parts of your home are Wi-Fi dead spots or get very weak signals, try placing the router in an open, central location - away from walls and obstructions, such as metal filing cabinets.

You could also try the trusty beer-can hack. This involves cutting a beer or soda can open with a utility knife to make a parabolic antenna out of it. This offbeat trick can boost your network by two bars or more. It's easy, and I made a fun video to show you exactly how to do it. Watch it now.

5. Perform regular maintenance and make backupsKeep your software up to date. Updates fix bugs and improve the stability of your operating system and programs.

If you spend more than 2 minutes a day looking for files on your hard drive, it's time to organize your files and clear out old stuff. These handy freebies will help you. Keeping a block of free space on your hard drive will also give a speed boost to your operating system.

Of course, the most important maintenance tip I can give is to back up your data with a cloud-based solution. This way, your backup is safe from fire, theft and flood. There are many services available. The service I recommend is called Carbonite. Yes, it is an advertiser on my national radio show, but I've used its services for years even before they were an advertiser. It's the best company to trust for your data.

Kim Komando hosts the nation's largest talk radio show about consumer electronics, computers and the Internet. To get the podcast, watch the show or find the station nearest you, visit: www.komando.com/listen. To subscribe to Kim's free email newsletters, sign-up at: www.komando.com/newsletters.